Likewise , lacZ in the phoP mutant indicated that PhoP is involved in the regulation of tlpA .
Likewise , the higher expression of tlpA : indicated that PhoP is involved in the regulation of tlpA .
To further investigate the possibility that PhoP regulates tlpA , we constructed OG2008 .
To further investigate the possibility that PhoP regulates tlpA , we constructed a double mutant strain .
These results indicate that PhoP plays a pivotal role as a repressor in the regulation of tlpA .
Therefore , the regulation of tlpA by PhoP may provide a molecular mechanism to the suppressed expression of tlpA under MgM medium , containing low Mg 2þ concentration .
Therefore , the regulation of tlpA by PhoP may explain a molecular mechanism to the suppressed expression of tlpA under MgM medium , containing low Mg 2þ concentration .